so ive been having a problem with my 7.3 after cold starts. anywhere from -10F to 40F. when i start it with one long crank (about 6 seconds or so), it will start with a rough idle for a few seconds with lots of smoke. after idling fine for maybe a half minute i take off and under acceleration it exhibits a pronounced miss or shudder. when i come to a stop it idles fine. after driving and warming it up, it gradually dissipates and runs normal. however, if i cold start it by giving it a 2 second crank, stop, and then give it another 2 second crank, it fires up more smooth and does not exhibit the shudder/miss behavior. i would like to fix the long cranking issue and shudder/miss issue. im guessing they are related. any thoughts?

It has 174k on it and I am pretty sure the injectors are original, but not positive. it always smokes at least a little on start up, but it kicks out quite a bit of white smoke when i crank it a long time. i was thinking of looking into that icp sensor but i dont know where it is. but i will try that test this weekend and report back.

how cold is it your fuel could be jelling up mine sounds weird sometime when its really cold and my fuel jells but drived it a while well about 10-15 min and its okay like some of the reutrning fuel is warm and un jells it... and are you plugging it in?

I dont have a place to plug it in since i live in a stupid apartment without core heater access. as i said it happens below 40 degrees when i just crank the heck out of it. I did unplug the ICP sensor and it threw a code, but it hasnt been cold enough to know if it behaves normal. The oil is 10w30 rotella. Ive been thinking that the injectors might be getting tired but the are expensive and i dont want to go after them if not necessary. is there an inexpenive way to test them? and will i see an increase in mileage if i replace worn injectors?

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